java.text.SimpleDateFormat#setDateFormatSymbols ( )源码实例Demo

public void test_setDateFormatSymbolsLjava_text_DateFormatSymbols() {
    // Test for method void
    // java.text.SimpleDateFormat.setDateFormatSymbols(java.text.DateFormatSymbols)
    SimpleDateFormat f1 = new SimpleDateFormat("a");
    DateFormatSymbols symbols = new DateFormatSymbols();
    symbols.setAmPmStrings(new String[] { "morning", "night" });
    f1.setDateFormatSymbols(symbols);
    DateFormatSymbols newSym = f1.getDateFormatSymbols();
    assertTrue("Set incorrectly", newSym.equals(symbols));
    assertTrue("Not a clone", f1.getDateFormatSymbols() != symbols);
    String result = f1.format(new GregorianCalendar(1999, Calendar.JUNE, 12, 3, 0).getTime());
    assertEquals("Incorrect symbols used", "morning", result);
    symbols.setEras(new String[] { "before", "after" });
    assertTrue("Identical symbols", !f1.getDateFormatSymbols().equals(symbols));

    try {
        f1.setDateFormatSymbols(null);
        fail();
    } catch (NullPointerException expected) {
    }
}
 

public Object getDesignValue( final ExpressionRuntime runtime, final ReportElement element ) {
  Object formatStringRaw = element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.FORMAT_STRING );
  final Object staticValue = ElementTypeUtils.queryStaticValue( element );
  if ( staticValue instanceof Date ) {
    if ( formatStringRaw == null ) {
      // return the default to-string behavior of java.util.Date
      formatStringRaw = DEFAULT_FORMAT;
    }
    final Locale locale = runtime.getResourceBundleFactory().getLocale();
    final TimeZone timeZone = runtime.getResourceBundleFactory().getTimeZone();
    final SimpleDateFormat dateFormat = new SimpleDateFormat( String.valueOf( formatStringRaw ), locale );
    dateFormat.setDateFormatSymbols( new DateFormatSymbols( locale ) );
    dateFormat.setTimeZone( timeZone );
    return rotate( element, dateFormat.format( staticValue ), runtime );
  }
  final Object value = ElementTypeUtils.queryFieldName( element );
  return rotate( element, value != null ? value : getId(), runtime );
}
 

static private Axis chartXAxis(int size) {

        final Axis xAxis = new Axis();
        xAxis.setAutoGenerated(false);
        xAxis.setHasTiltedLabels(true);
        xAxis.setTiltAngle(-90f);
        xAxis.setMaxLabelChars(7);

        SimpleDateFormat sdf = new SimpleDateFormat(DateFormat.is24HourFormat(xdrip.getAppContext()) ? "HH:mm" : "a h:mm");

        DateFormatSymbols symbols = new DateFormatSymbols(Locale.getDefault());
        // OVERRIDE SOME symbols WHILE RETAINING OTHERS
        symbols.setAmPmStrings(new String[] { "a", "p" });
        sdf.setDateFormatSymbols(symbols);

        final java.text.DateFormat timeFormat = sdf;
        timeFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
        final GregorianCalendar calendar = new GregorianCalendar();
        calendar.setTimeInMillis(JoH.tsl());
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);

        xAxis.setAutoGenerated(false);

        // TODO make this a better am/pm/24 hour thingy by dividing a day down? DST??? how does that work?? - done on load of value?
        List<AxisValue> axisValues = new ArrayList<>();
        final int step = size / segments;
        final long dayStartMs = calendar.getTimeInMillis();
        final long increment = Constants.DAY_IN_MS / segments;
        for (int i = 0; i < size; i = i + step) {
            calendar.setTimeInMillis(dayStartMs + i*increment);
            axisValues.add(new AxisValue(i / step,  timeFormat.format(calendar.getTimeInMillis()).toCharArray()));
        }
        xAxis.setValues(axisValues);
        return xAxis;
    }
 

static private Axis chartXAxis(int size) {

        final Axis xAxis = new Axis();
        xAxis.setAutoGenerated(false);
        xAxis.setHasTiltedLabels(true);
        xAxis.setTiltAngle(-90f);
        xAxis.setMaxLabelChars(7);

        SimpleDateFormat sdf = new SimpleDateFormat(DateFormat.is24HourFormat(xdrip.getAppContext()) ? "HH:mm" : "a h:mm");

        DateFormatSymbols symbols = new DateFormatSymbols(Locale.getDefault());
        // OVERRIDE SOME symbols WHILE RETAINING OTHERS
        symbols.setAmPmStrings(new String[] { "a", "p" });
        sdf.setDateFormatSymbols(symbols);

        final java.text.DateFormat timeFormat = sdf;
        timeFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
        final GregorianCalendar calendar = new GregorianCalendar();
        calendar.setTimeInMillis(JoH.tsl());
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);

        xAxis.setAutoGenerated(false);

        // TODO make this a better am/pm/24 hour thingy by dividing a day down? DST??? how does that work?? - done on load of value?
        List<AxisValue> axisValues = new ArrayList<>();
        final int step = size / segments;
        final long dayStartMs = calendar.getTimeInMillis();
        final long increment = Constants.DAY_IN_MS / segments;
        for (int i = 0; i < size; i = i + step) {
            calendar.setTimeInMillis(dayStartMs + i*increment);
            axisValues.add(new AxisValue(i / step,  timeFormat.format(calendar.getTimeInMillis()).toCharArray()));
        }
        xAxis.setValues(axisValues);
        return xAxis;
    }
 

/**
 * Allows the AM/PM text to be set.
 *
 * @param am AM text
 * @param pm PM text
 */
public void setAmPmText(String am, String pm)
{
   for (SimpleDateFormat format : m_formats)
   {
      DateFormatSymbols symbols = format.getDateFormatSymbols();
      symbols.setAmPmStrings(new String[]
      {
         am,
         pm
      });
      format.setDateFormatSymbols(symbols);
   }
}
 

protected SimpleDateFormat initialValue() {
    final Locale locale = ThreadSafeDateFormatter.this.locale == null
            ? Locale.getDefault() : ThreadSafeDateFormatter.this.locale;
    final SimpleDateFormat formatter = new SimpleDateFormat(pattern, locale);

    if (tz != null) {
        formatter.setTimeZone(tz);
    }

    if (symbols != null) {
        formatter.setDateFormatSymbols(symbols);
    }
    return formatter;
}
 

private String formatDate(Locale l, String fmt, DateFormatSymbols dfs) {
    SimpleDateFormat sdf = new SimpleDateFormat(fmt, l);
    sdf.setDateFormatSymbols(dfs);
    sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
    return sdf.format(new Date(0));
}
 

/**
 * Parses the value read from the column specified by the given field-name and tries to parse it into a Date using the
 * given SimpleDateFormat-pattern.
 *
 * @return the value of the function.
 */
public Object getValue() {
  final DataRow dataRow = getDataRow();
  // get the row directly as a Number
  final Object o = dataRow.get( field );
  // check if that thing is a Number
  if ( o instanceof Date ) {
    return o;
  }

  // get a string and convert
  try {
    Locale localeUsed = locale;
    if ( localeUsed == null ) {
      localeUsed = getResourceBundleFactory().getLocale();
    }

    final DateFormat format;
    if ( dateFormat == null || ObjectUtilities.equal( localeUsed, lastLocale ) == false ) {
      final String formatString = getFormat();
      if ( formatString == null || formatString.length() == 0 ) {
        format = DateFormat.getDateInstance( DateFormat.DEFAULT, localeUsed );
        dateFormat = format;
        lastLocale = localeUsed;
      } else {
        final SimpleDateFormat sformat = new SimpleDateFormat( formatString );
        if ( locale != null ) {
          sformat.setDateFormatSymbols( new DateFormatSymbols( locale ) );
        } else {
          final ResourceBundleFactory factory = getResourceBundleFactory();
          sformat.setDateFormatSymbols( new DateFormatSymbols( factory.getLocale() ) );
        }
        format = sformat;
        dateFormat = sformat;
        lastLocale = localeUsed;
      }
    } else {
      format = dateFormat;
    }
    if ( ObjectUtilities.equal( timeZone, lastTimeZone ) == false ) {
      lastTimeZone = timeZone;
      format.setTimeZone( timeZone );
    }
    return format.parse( String.valueOf( o ) );
  } catch ( ParseException e ) {
    return null;
  }
}